index.php inside cache folders. What for?

[Prestan0ob]

Presta 1.6. By mistake i deleted the index.php inside the cache folder and subfolders. Can i recover them from an other installed prestashop 1.6?

It contains

* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <[email protected]>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/
                    
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
    
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
    
header("Location: ../");
exit;

[TiaNex Shopping]

it's for security reason,

it will show blank page instead of the file list of the path or other information

[Prestan0ob]

Thank you. It's ok to recover them from an other e-shop or from prestashop installation files?